[go: up one dir, main page]

JP4291674B2 - Ｏｆｄｍ送信機及びｏｆｄｍ受信機 - Google Patents

Ｏｆｄｍ送信機及びｏｆｄｍ受信機 Download PDF

Info

Publication number
JP4291674B2
JP4291674B2 JP2003381708A JP2003381708A JP4291674B2 JP 4291674 B2 JP4291674 B2 JP 4291674B2 JP 2003381708 A JP2003381708 A JP 2003381708A JP 2003381708 A JP2003381708 A JP 2003381708A JP 4291674 B2 JP4291674 B2 JP 4291674B2
Authority
JP
Japan
Prior art keywords
guard interval
unit
interval length
length
ofdm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2003381708A
Other languages
English (en)
Japanese (ja)
Other versions
JP2005150850A (ja
Inventor
啓正 藤井
博人 須田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to JP2003381708A priority Critical patent/JP4291674B2/ja
Priority to US10/984,976 priority patent/US7480235B2/en
Priority to CN2004100910022A priority patent/CN1617533B/zh
Priority to EP04026806.2A priority patent/EP1531593B1/en
Priority to EP09009784A priority patent/EP2109274A1/en
Publication of JP2005150850A publication Critical patent/JP2005150850A/ja
Application granted granted Critical
Publication of JP4291674B2 publication Critical patent/JP4291674B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
JP2003381708A 2003-11-11 2003-11-11 Ｏｆｄｍ送信機及びｏｆｄｍ受信機 Expired - Lifetime JP4291674B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2003381708A JP4291674B2 (ja) 2003-11-11 2003-11-11 Ｏｆｄｍ送信機及びｏｆｄｍ受信機
US10/984,976 US7480235B2 (en) 2003-11-11 2004-11-10 OFDM transmitter and OFDM receiver
CN2004100910022A CN1617533B (zh) 2003-11-11 2004-11-11 Ofdm发射机
EP04026806.2A EP1531593B1 (en) 2003-11-11 2004-11-11 OFDM transmitter and OFDM receiver
EP09009784A EP2109274A1 (en) 2003-11-11 2004-11-11 OFDM transmitter and OFDM receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003381708A JP4291674B2 (ja) 2003-11-11 2003-11-11 Ｏｆｄｍ送信機及びｏｆｄｍ受信機

Publications (2)

Publication Number Publication Date
JP2005150850A JP2005150850A (ja) 2005-06-09
JP4291674B2 true JP4291674B2 (ja) 2009-07-08

Family

ID=34431434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003381708A Expired - Lifetime JP4291674B2 (ja) 2003-11-11 2003-11-11 Ｏｆｄｍ送信機及びｏｆｄｍ受信機

Country Status (4)

Country Link
US (1) US7480235B2 (zh)
EP (2) EP1531593B1 (zh)
JP (1) JP4291674B2 (zh)
CN (1) CN1617533B (zh)

Families Citing this family (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7046651B2 (en) * 2003-04-04 2006-05-16 Nokia Corporation System topologies for optimum capacity transmission over wireless local area networks
JP4703135B2 (ja) * 2004-05-25 2011-06-15 株式会社エヌ・ティ・ティ・ドコモ 送信機および送信制御方法
EP1790100A4 (en) 2004-09-18 2013-01-02 Samsung Electronics Co Ltd METHOD AND DEVICE FOR FREQUENCY SYNCHRONIZATION IN AN OFDM SYSTEM
US7567502B2 (en) * 2004-10-14 2009-07-28 Qualcomm Incorporated Methods and apparatus for adjusting bandwidth allocation in a wireless communications system
US7969858B2 (en) 2004-10-14 2011-06-28 Qualcomm Incorporated Wireless terminal methods and apparatus for use in wireless communications systems supporting different size frequency bands
US20060159187A1 (en) * 2005-01-14 2006-07-20 Haifeng Wang System and method for utilizing different known guard intervals in single/multiple carrier communication systems
US20060176966A1 (en) * 2005-02-07 2006-08-10 Stewart Kenneth A Variable cyclic prefix in mixed-mode wireless communication systems
JP4732808B2 (ja) * 2005-06-14 2011-07-27 株式会社エヌ・ティ・ティ・ドコモ 無線パラメータ群を生成する装置
JP2006352786A (ja) * 2005-06-20 2006-12-28 Sharp Corp Ｏｆｄｍ無線通信システムおよび基地局装置および端末局装置
EP1898543A1 (en) * 2005-07-14 2008-03-12 Matsushita Electric Industrial Co., Ltd. Radio communication apparatus and radio communication method in multicarrier communication
CN1909534A (zh) * 2005-08-02 2007-02-07 松下电器产业株式会社 可重构ofdm系统及其发送和接收操作方法
JP4722931B2 (ja) * 2005-08-26 2011-07-13 シャープ株式会社 通信制御装置、通信端末装置、無線通信システムおよび送信方法
CN101248605B (zh) * 2005-08-26 2011-09-21 松下电器产业株式会社 无线发送装置和无线发送方法
JP4632908B2 (ja) * 2005-09-08 2011-02-16 シャープ株式会社 通信端末装置、通信制御装置、無線通信システムおよび通信方法
CN101326752B (zh) * 2005-12-08 2013-02-13 皇家飞利浦电子股份有限公司 用于具有自适应保护间隔的单载波块传输的系统、设备和方法
US8139661B2 (en) * 2005-12-08 2012-03-20 Electronics And Telecommunications Research Institute Signal transmitting and receiving apparatuses
EP1971058A4 (en) * 2005-12-15 2013-06-05 Fujitsu Ltd TRANSMISSION PROCESSING AND BASE STATION IN A MOBILE COMMUNICATION SYSTEM
US7715442B2 (en) * 2006-02-24 2010-05-11 Intel Corporation Method, apparatus, and system of wireless transmission with frame alignment
JP4664234B2 (ja) * 2006-05-24 2011-04-06 富士通セミコンダクター株式会社 Ｏｆｄｍ受信機
JP4763785B2 (ja) * 2006-06-26 2011-08-31 京セラ株式会社 Ｏｆｄｍ通信装置及びガードインターバル長決定方法
US8121229B2 (en) * 2006-07-24 2012-02-21 Industrial Technology Research Institute Guard section length detection method and system
CN1913513B (zh) * 2006-07-31 2010-08-04 华为技术有限公司 一种自动识别保护间隔的方法和终端
US8400998B2 (en) 2006-08-23 2013-03-19 Motorola Mobility Llc Downlink control channel signaling in wireless communication systems
JP2008177693A (ja) * 2007-01-16 2008-07-31 Futaba Corp Ｏｆｄｍ方式通信システム及びｏｆｄｍ方式受信装置
JP5207756B2 (ja) * 2007-03-07 2013-06-12 キヤノン株式会社 通信システム、通信装置、及びその制御方法
JP4359638B2 (ja) * 2007-08-24 2009-11-04 Ｏｋｉセミコンダクタ株式会社 相関演算器及び相関演算装置
US8223857B2 (en) 2008-02-17 2012-07-17 Lg Electronics Inc. Method of communication using frame
WO2009125708A1 (ja) * 2008-04-08 2009-10-15 日本電気株式会社 無線通信システム、無線通信装置、無線通信方法、プログラム
US8073064B2 (en) * 2008-04-18 2011-12-06 Newport Media, Inc. Robust FFT trigger point tracking for echo channels in OFDM based communication systems
US8503366B2 (en) 2008-04-30 2013-08-06 Nec Corporation Radio communication system, radio communication device, radio communication method, and program
JP5213512B2 (ja) * 2008-05-07 2013-06-19 キヤノン株式会社 送信装置及び方法
CN101621366B (zh) * 2008-07-01 2012-11-14 富士通株式会社 无线通信系统的自适应传输方法和系统
JP5376856B2 (ja) * 2008-08-01 2013-12-25 キヤノン株式会社 通信システム及び受信装置、並びにそれらの制御方法
CN101404631B (zh) * 2008-11-19 2013-08-14 北京韦加航通科技有限责任公司 一种单载波系统的自适应均衡方法
EP2357748A2 (en) 2008-11-27 2011-08-17 LG Electronics Inc. Apparatus and method for data transmission in wireless communication system
US9154273B2 (en) 2008-12-22 2015-10-06 Lg Electronics Inc. Method and apparatus for data transmission using a data frame
WO2010113887A1 (ja) * 2009-03-31 2010-10-07 日本電気株式会社 無線基地局装置、通信端末、通信処理方法およびプログラム
JP2012044414A (ja) * 2010-08-18 2012-03-01 Lapis Semiconductor Co Ltd 相関器及びそれを含む復調装置
JP2011019265A (ja) * 2010-08-30 2011-01-27 Sharp Corp Ｏｆｄｍ無線通信システムおよび送信装置
US8719684B2 (en) 2010-08-31 2014-05-06 Qualcomm Incorporated Guard interval signaling for data symbol number determination
CN102487371B (zh) * 2010-12-02 2014-03-19 无锡物联网产业研究院 一种带宽调整方法、发射机和接收机
JP2012204941A (ja) * 2011-03-24 2012-10-22 Toshiba Corp 受信装置および受信方法
EP2704383B1 (en) * 2012-09-04 2019-05-29 Alcatel Lucent Method and device for improving a home network making use of an adaptive guard interval
US9071390B2 (en) * 2013-01-10 2015-06-30 Qualcomm Incorporated Adjusting physical layer transmission properties
EP2809039A1 (en) * 2013-05-27 2014-12-03 Alcatel Lucent Method and device for improving a home network making use of an adaptive guard interval
US10057389B2 (en) * 2013-05-28 2018-08-21 Intel Deutschland Gmbh Methods and devices for processing a data frame
JP5842900B2 (ja) * 2013-12-05 2016-01-13 株式会社デンソー 通信システム
US10524161B2 (en) 2014-08-20 2019-12-31 Qualcomm Incorporated Delay spread estimation and utilization
US10498576B2 (en) * 2015-09-21 2019-12-03 Telefonaktiebolaget Lm Ericsson (Publ) Guard interval adaptation for wireless communication
US9520910B1 (en) * 2015-09-24 2016-12-13 Nxp B.V. Receiver component and method for enhancing a detection range of a time-tracking process in a receiver
WO2017112694A1 (en) * 2015-12-22 2017-06-29 Idac Holdings, Inc. Adaptation of cyclic prefix duration to delay spread whilst maintaining symbol duration
KR101796440B1 (ko) * 2016-02-05 2017-11-10 주식회사 이노와이어리스 신호 분석기에서 ｇｓｍ 신호의 슬롯 동기화 방법
KR20190022466A (ko) 2016-06-20 2019-03-06 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 정보 전송 방법 및 장치
JP6299822B2 (ja) * 2016-08-29 2018-03-28 Ｎｔｔエレクトロニクス株式会社 既知信号検出方法
WO2018080724A1 (en) * 2016-10-26 2018-05-03 Intel Corporation Single carrier physical layer block interleaver
JP2019216366A (ja) * 2018-06-13 2019-12-19 日本電気株式会社 無線通信装置及び無線通信方法
US12261796B2 (en) 2019-08-16 2025-03-25 Qualcomm Incorporated Air-to-ground communication scheduling
CN115396273B (zh) * 2022-08-26 2024-02-06 西安交通大学 一种ofdm导航信号的调制及性能判断方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9413481D0 (en) 1994-07-05 1994-08-24 British Broadcasting Corp Improvements to digital transmission systems
DE4425713C1 (de) * 1994-07-20 1995-04-20 Inst Rundfunktechnik Gmbh Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten
SE504897C2 (sv) 1996-02-14 1997-05-26 Telia Ab Förfarande och anordning i ett OFDM system med variabel varaktighet av symbolskur
JP3726856B2 (ja) 1997-05-02 2005-12-14 ソニー株式会社 受信装置および受信方法
EP0895388B1 (en) 1997-07-28 2004-09-22 Deutsche Thomson-Brandt Gmbh Symbol synchronisation and mode detection for multicarrier signals
JP3981898B2 (ja) * 1998-02-20 2007-09-26 ソニー株式会社 信号受信装置および方法、並びに記録媒体
JP2000059330A (ja) * 1998-08-04 2000-02-25 Sony Corp デジタル放送の受信機
JP2000244441A (ja) 1998-12-22 2000-09-08 Matsushita Electric Ind Co Ltd Ｏｆｄｍ送受信装置
JP3946932B2 (ja) 2000-04-27 2007-07-18 株式会社東芝 Ｏｆｄｍ受信装置
EP1168699A2 (en) 2000-06-21 2002-01-02 TRW Inc. Common downlink frame length for differing code rates with hopping waveform
GB2364865B (en) * 2000-07-12 2004-01-21 Conexant Systems Inc Receiver circuit
JP3539390B2 (ja) 2001-02-21 2004-07-07 日本電気株式会社 デジタル送受信装置
JP3539396B2 (ja) 2001-03-28 2004-07-07 日本電気株式会社 Ｏｆｄｍ受信機
EP1267536A1 (en) 2001-06-13 2002-12-18 Conexant Systems, Inc. Multicarrier receiver with detection of the transmission mode and length of the guard interval
JP4644978B2 (ja) 2001-06-15 2011-03-09 パナソニック株式会社 Ｏｆｄｍ通信システム、ｏｆｄｍ通信方法およびｏｆｄｍ通信装置
CN101150556B (zh) * 2001-11-28 2015-11-25 富士通株式会社 正交频分复用传输方法、发射设备以及发射系统
US8325590B2 (en) 2002-02-27 2012-12-04 Apple Inc. OFDM communications system
JP4298320B2 (ja) * 2002-11-08 2009-07-15 富士通株式会社 Ｏｆｄｍ伝送方式における受信装置

Also Published As

Publication number Publication date
EP2109274A1 (en) 2009-10-14
CN1617533B (zh) 2010-09-15
EP1531593A2 (en) 2005-05-18
EP1531593B1 (en) 2016-04-13
CN1617533A (zh) 2005-05-18
US20050099936A1 (en) 2005-05-12
JP2005150850A (ja) 2005-06-09
EP1531593A3 (en) 2007-01-24
US7480235B2 (en) 2009-01-20

Similar Documents

Publication Publication Date Title
JP4291674B2 (ja) Ｏｆｄｍ送信機及びｏｆｄｍ受信機
JP3649326B2 (ja) Ｏｆｄｍ方式のガードインターバル長制御方法及びｏｆｄｍ送受信装置
US7599327B2 (en) Method and apparatus for accessing a wireless communication system
JP4208873B2 (ja) フレーム開始推定装置及び方法
CN105024791B (zh) 物理帧中前导符号的生成方法
JP5130276B2 (ja) 無線基地局
AU2709101A (en) Channel constructing method and base station using the method
TW200832957A (en) Robust and low-complexity combined signal power estimation
Zhou et al. OFDMA initial ranging for IEEE 802.16 e based on time-domain and frequency-domain approaches
CN103441830B (zh) 一种基于探测参考信号的定时同步方法
KR20080055895A (ko) 송수신 시스템, 전송 장치, 및 그들에 이용하는 파일럿신호 다중 방법
KR102407772B1 (ko) 무선 통신 시스템에서 주파수 오프셋 추정 방법 및 장치
JP4610401B2 (ja) チャネル推定装置
JP4125729B2 (ja) 直交周波数分割多重化に基づく通信システムのための時間同期化方法
JP3869374B2 (ja) シンボルタイミング検出回路
JP4287686B2 (ja) マルチキャリア受信装置及び回線補償方法
KR20060082228A (ko) 다중반송파부호분할다중접속 시스템을 위한 파일럿 기반의채널 추정 방법
KR20110071758A (ko) 타이밍 동기 검출 장치 및 타이밍 동기 검출 방법
KR101100460B1 (ko) Ｏｆｄｍ 시스템에서의 심벌 및 프레임의 시간 동기 방법및 장치
JP6664521B2 (ja) 副搬送波間の干渉および雑音信号を抑制する方法およびこれを行う直交周波数分割多重受信機
KR101255636B1 (ko) Ｏｆｄｍ 기반 시스템에서 정수배 주파수 옵셋 추정 방법 및 이러한 방법을 수행하는 장치
KR20100065077A (ko) 무선 통신 시스템에서 하향 링크 신호에 대한 타이밍 오프셋을 추정하는 방법 및 그 장치
KR100973477B1 (ko) Ｏｆｄｍ 시스템에서 미세 타이밍 동기 추정 장치 및 방법
KR20100004690A (ko) Ｃａｚａｃ 코드 기반 이동통신 시스템에서 무선 환경적응형 채널 추정 장치 및 방법
KR20110068740A (ko) 상향링크 초기 레인징 시간 오차 탐색 범위 조정 방법 및 장치

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060424

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080825

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20081021

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081222

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20090310

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20090403

R150 Certificate of patent or registration of utility model

Ref document number: 4291674

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120410

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120410

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130410

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130410

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140410

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250